444 EXPERIMENT STATION RECOBD. [Yol. 37 



821-82S). — ^The author indicated that the younger a plant at the time of lodg- 

 ing the greater is the loss. The loss also varied directly with the degree of 

 brittleness of the stem. Poor drainage aggravated lodging, while the removal 

 of the dead leaves served to decrease the loss through lodging. Other causes 

 which contribute to lodging are a lack of silicic acid in the stem ; too frequent 

 cultivation; overfertilization ; shallow planting, whereby the cane becomes top- 

 heavy ; and severe wind and rain storms. 



The prevention of lodging is said to be by " direct " and " indirect " methods. 

 Direct methods are described as those which act without exerting any dis- 

 turbing influence on the growth of the plant itself as deep planting, planting 

 at different distances, and planting in such a way that the idividual plants 

 afford each other support. The indirect methods include such practices as 

 light fertilization, whereby the growth of the cane is less rapid and luxuriant ; 

 the application of phosphates to hasten maturity ; the removal of dead leaves 

 to permit of freer circulation of air and light ; the strengthening of the stalk 

 by the removal of some of the green leaves ; and improved drainage, especially 

 as the cane increases in height. Several authorities are quoted to some length 

 in the course of the discussion. 



Excerpts from correspondence between the author and otlier investigators 

 on the value of potash fertilizers in regard to lodging are included. Opinion 

 was found to be divided on this point. 



Lodging in sugar cane, and its prevention, P. W. Houtuan {Arch. Suiker- 

 Indus. Kederland. Indie, 2k (1916), No. 17, pp. 637-S65, figs. 6).— The causes 

 and effects of lodging in sugar cane are discussed, and suggestions made for 

 its prevention. 



The author outlines the causes of lodging as rank growth on fertile soil, 

 too high nitrogen fertilization, the continuation of heavy rains through the 

 vegetative period, wind and .severe rain storms, and light, poaty soils affording 

 insufficient support to the roots of the cane. Data and graphs are presented 

 showing the degree and the effect on yield of lodging at different experimental 

 centers and with different varieties. 



While, as a rule, no attempt has been made to prevent lodging, there 

 are certain definite measures that have proved beneficial. The author dis- 

 cusses these and presents data in support of his arguments. The methods 

 noted are the tying up of the cane, less fertilization, earlier applications of 

 the fertilizers used, wider plantings of the cane, and the use of varieties not 

 addicted to lodging. 



[Sugar cane] (Ilaicaii. Sugar Planters' Assoc., Rpt. Com. Cult, and Fert. 

 Unirrig. Plantations, 1916, pp. 59, pi. 1, figs. 2). — The points taken up in this 

 report include topping experiments, crop of 1916 ; stubble shaving ; deteriora- 

 tion in the first mill juice; the handling of plant and ratoon fields and their 

 green soiling; and fertilization by means of soil bacteria. 



The relation of applied science to sugar production in Hawaii, H. P. Agee 

 Err AL. {Hatcaiian Sugar Planters' Assoc. Rpt. 1915, pp. 5-84, /''• !< fig^- 25). — 

 A report compiled by the director of the Hawaiian Sugar Planters' Station 

 at the request of the U. S. Department of Commerce, and with the cooperation 

 of the station staff. The report Includes an Introduction and chapters on the 

 experiment station work, and publications dealing with the application of 

 scientific knowledge and discoveries to the sugar Industry. 



Sweet clover: Utilization, H. S. Coe {U. S. Dept. Agr., Farmers' Bui. 820 

 {1917), pp. S2, figs. IS). — The use of sweet clover for pasture, hay. silage, soil- 

 ing, soil improvement, and as a honey plant Is discussed in some detail. 



